Safety-pin.



- No. 743,690. PATENTED NOV. 10, 1903.

J. W. CASPER & W. GERBER.

. SAFETY PIN.

APPLICATION FILED APR; 7- 1903.

H0 MODEL.

fnvenioxs UN r'rs S'rnrss j Patented November 10, 1903.

ATENT Fries.

SAFETY-PIN.

srsorrronrron forming part of Letters Patent no. 743,690, dated November10, 1903. Application filed April 7, 1903 Scrialllo. 151.534. (N0model.)

To all whom it may concern:

Be it known that we, JOSEPH NV. CASPER and WILLIAM GERBER, citizens oftheUnited States, residing at Sacramento, county of Sacramento, State ofCalifornia, have invented anlmprovementin Safety-Pins; and we herebydeclare the following to be a full, clear, and exact description of thesame.

Our invention relates to an attachment for safety-pins which enables theuser to easily disengage the pin from the inclosingtip into which it isforced by the elasticity of the parts.

It consists in forming the inclosing tip into which the point of thesafety-pin is forced byelasticity with an open slot in the part againstwhich the pin normally rests and in con-junction therewith of a hingedor pivoted plate, which is normally interposed to prevent the pin frompassing out from said slot. By withdrawing the plate a little the slotis left open and the point of the pin will be forced through it andreleased.

Referring to the accompanying drawings, Figure l is a side view of thesafety-pin, showing the locking-plate. Fig. 2 is a trans- Verse sectionof the cap and plate, showing the end of the pin within the cap andretained by the plate. Fig. 3 is a section showing the manner ofreleasing the point A.

Safety-pins are commonly formed by bonding a Wire to form an elasticcoil at a point about the center, securing to one of the ends a cap openupon one side, and the other or pointed end of the wire is adapted toenter the open side of the cap and remain within the inclosed headportion by means of its elasticity. Thus after the pointed portion hasbeen pushed through the parts to be se cured it is sprung into the cap,and it is held in place and the point protected. It is sometimesdifticult to disengage such pins by springing them back to the openside; audit is the object of our invention to provide for the easyrelease of such pins, which will separate and fly open by their ownelasticity when released.

As shown in the drawings, A and Bare the two members of the pin, havinga coil or equivalentelastic portion at the bight or turn 0, which actsto normally separate the two members of the pin to stand at an angle.

side,'and when pressure is released it will spring up into the closedpart of the cap. Ordinarily it is necessary to again compress themembers of the pin and draw the pointed portion sidewise through theopening 3'in order torelease it.

In our invention we have made a slot 4 in the top of the cap 2, thisslot being of sufficient length and width to allow the point of the pinmember A to pass freely through it when not obstructed. In order toretain the pin within the cap when desired, we have shown an obstructionwhich closes this slot 4. The obstruction consists of a plate or arm 5,which normally lies in such position as to cover this sloteand preventthe pin from passing out. This stop-plate is pivoted, as shown at 6, andis turnable about its pivot, so as to be withdrawn sufficiently to allowthe pin to pass the plate and to escape through the slot.

As shown, in the present case the outer end of the plate is perforatedand is pivoted within the outer end of the cap 2 by indenting the sidesof the cap, so that the inwardly-prd truding indented points enter thehole formed in the outer end of the plate, and thus form the pivot uponwhich the plate is turnable, as plainly shown in cross-section at 6; butit will be manifest that the plate maybe otherwise pivoted.

The front end of the plate or that part farthest from the pivot-point isbent, so as to inclose the member B of the pin, as shown at 7, thisinclosing portion being made oval in the line of movement of the plate,so as to allow the latter to turn about its pivot.

The upper portion of the plate, as shown, is preferably curved slightly,as shown at 8, and this curved portion normally lies across and closesthe slot 4 in the top of the cap 2,

"so that when the pin A has been passed through the parts to be securedand entered into the cap through the side opening 3 it rises by itselasticity into the upper closed portion of the cap and contacts withthe curved portion 8 of the stop-plate and is prevented from escapingfrom the cap.

ble members, a cap fixed to one of said mem-' bers and having a slot inits top and an opening in one side to admit the pointed end of the othermember, and a stop-plate between said members and having one portionextending into the cap and contained between the inner Walls thereof,and havingits upper portion turned to one side to normally obstruct theslot from below, said stop -plate pivotally secured to move in a pathparallel with the side walls of the cap, to release the pin memberconfined in said cap.

2. A safety-pin having the elastic separable members, a cap fixed to oneof said members and having a slot in its top and an opening in one sideto admit the pointed end of the other member, and a stop-plate betweensaid members, having one portion extending into thebottom of the cap andhavingacurved extremity to normally'obstruct the slot from below, saidplate pivotally secured to move in a path parallel with the sides of thecap and having a second portion to hook over the member to which the capis fixed.

In witness whereof we have hereunto set our hands.

JOSEPH W. CASPER. WILLIAM GERDER. \Vitnesses:

C. GRIFFIN, E. R. HARRIS.

